Update Security String to 2017-02-01 in klp-dev am: b1a7ec0841 am: 5c99964c63 am: ce2b665128  -s ours am: 2c827418dd am: 380ba6deec am: 9baf1b5294
am: 34eec6554f

Change-Id: I0a1dd54efa403f01c9a5c6aab7b104ae8e4fc575